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KYN28-12 Armored metal enclosed switchgear (standardized and customized by State Grid)

KYN28-12 Type indoor AC metal armored central switchgear. It is applicable to three-phase AC power system with rated voltage of 12kV and rated frequency of 50Hz. It is used to receive and distribute electric energy and implement control, protection, wireless temperature measurement and on-line monitoring devices for the circuit.
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Product overview

Kyn28-12 indoor AC metal armored central switchgear. It is applicable to three-phase AC power system with rated voltage of 12kV and rated frequency of 50Hz. It is used to receive and distribute electric energy and implement control, protection, wireless temperature measurement and on-line monitoring devices for the circuit.

This product meets the requirements of GB3906 3 ~ 35kV AC metal enclosed switchgear, GB / t11022 common technical requirements for high voltage switchgear and control equipment standards, iec60298 AC metal enclosed switchgear and control equipment with rated voltage above IKv and below 52kv, and DL / t404 technical conditions for indoor AC high voltage switchgear.

 

Model meaning

K

Y

N

28

12

Metal enclosed armored

Movable type (handcart center mounted)

Indoor use

Design serial number

Rated voltage (kV)

Primary circuit scheme

Environmental characteristic code: th - for hot and humid conditions, Ta - for dry enthusiasm, G - for high altitude; C-for cold belt

 

Working conditions

Upper limit of ambient air temperature: + 40 ° C, lower limit of ambient air temperature: # 1000m above sea level;

◊ relative humidity: daily average not more than 95%, monthly average not more than 90%;

◊ water vapor pressure: the daily average value shall not be greater than 2.2kpa and the monthly average value shall not be greater than 1.8kpa;

◊ condensation may occur when the temperature drops suddenly, accompanied by pollution. This product is applicable to the following two environmental conditions that are more severe than normal conditions;

◊ condensation is infrequent (no more than twice a month on average) with slight pollution;

◊ generally, there is no condensation (no more than twice a year on average) and there is serious pollution;

◊ there is no fire, explosion hazard and gas with serious pollution enough to corrode metal and damage insulation;

◊ there are no places with violent vibration, turbulence and vertical inclination not exceeding 8 °.

Technical Parameter

Project Company Parameter
Rated voltage kV 3.6,7.2,12
Rated frequency Hz 50
Rated current of circuit breaker A 630,125,016,002,000,000,000,000,000
Rated current of switch cabinet A 630,125,016,002,000,000,000,000,000
Rated dynamic stability current (4S) kA 16,20,25,31.5,40,50
Rated steady current (peak) kA 40,50,63,80,100,125
Rated short-circuit breaking current kA 16,20,25,31.5,40,50
Rated short-circuit making current (peak) kA 40,50,63,80,100,125
Rated insulation level Imin power frequency withstand voltage kV 24 32 42
  Lightning impulse withstand voltage kV 40 60 75
Degree of protection   Enclosure IP4X, isolation room and circuit breaker room door are IP2X when they are opened

 

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